First off all you need to make sure that the wireless gaming adapter is working properly.
The easiest way to test this is connecting it to a pc. The moment you can surf the internet with that pc, you know everything is set up correctly.
The settings dhcp - static on the wireless gaming adapter are only for the gaming adapter web interface. They have nothing to do with the pc or xbox you connect to it. So, basically, you will need different ip adresses:
As an example:
192.168.1.1 for your wireless router.
192.168.1.10 for your pc
192.168.1.11 for your xbox
192.168.1.2 for your wireless gaming adapter.
The gateway setting will also be 192.168.1.1 The dns servers are those of your provider.
You can find them on one of your router webpages.
So,
http://192.168.1.1 accesses your router setup pages and
http://192.168.1.2 accesses your wireless gaming adapter web pages.
If you have your pc connected to the wireless gaming adapter, you should be able to ping the router from that. It proves that everything works fine.
You will need to edit the evox configuration file to change the evox ip settings. The unleashx dashboard is a bit easier to configure.
regards.